EP1277658B1 - Apparatus and method for packaging a roll of web material - Google Patents

Description

The invention relates to a device for packaging a web roll with a roller drive and Packaging web dispenser arrangement, the at least one first movable parallel to the roll of material web Has packaging web dispenser with an output path, which makes an acute angle with the circumferential direction of the Includes web roll. The invention further relates to a method for packaging a roll of material web with a packaging line where the packaging line led around the circumference of the roll of material becomes.

A device and a method of this type are known DE 195 35 746 A1 known. In the known case, the material web rolls to be packed with the packaging web enveloped in that the packaging web under one acute angle to the circumferential direction in contact with the Brought the scope of the web roll and the web roll then rotated. 'This pulls the material web roll the packaging web is helical on their scope if the packaging web donor is moved simultaneously in the axial direction. This arrangement has proven itself because it simplifies storage. The width of the packaging line no longer has to the width of the web of material must be adjusted. Much more can be done with a single packaging web width a wide range of web rolls with different cover axial lengths. With the known Device can usually be found on average up to about 120 rolls of material per hour packaging.

Conventional packaging devices with a Variety of packaging lines with different Widths are equipped and a packaging line depending on the width of the packaged Material web roll is selected are often in the Able to achieve greater throughput. Indeed this advantage is bought with the disadvantage that it is proportionate many different widths of wrapping paper must be kept ready, of which the packaging line is handled. This makes a lot Takes up space. Because the packaging lines are different Packaging web rolls for material web rolls must be performed is the structure of the device relatively complicated.

US 6 186 326 B1 describes a packaged paper roll and one Device for packaging this roll. Are in the device two packing heads are provided, both parallel to the axial extent the roll to be packed are movable. The one The packaging head can be one of a variety of packaging lines choose. The width of the selected packaging line depends on the width of the packaged Role. The second packaging head uses a plastic film, which he puts around the circumference of the roll under tension.

US 5 850 918 A describes another packaged web roll. The packaging of this roll consists of an inner one Layer that is formed by a plastic stretch film. This film is essentially in the axial direction around the roll guided and also covers the end faces. On this inner one first layer comes a second layer called plastic foam layer is trained and the packaged web roll should protect against pressure loads. To this Foam layer comes another plastic stretch film layer, which is wound helically around the roll.

The invention is based, with proportionate to the task high packaging performance with little effort to achieve.

This task is the beginning of a device mentioned type in that a second packaging dispenser is stationary, one Output path that is parallel to the circumferential direction the web of material runs.

This configuration combines the advantages of the two types of packaging devices known in principle, accept without any disadvantages have to. You can now change the type of packaging axial length of the web of material to be packed dependent do. If the packaging line of the second The width of the packaging web dispenser is sufficient, then it is used for packaging. For this, this Packaging web simply around the circumference Circumference of the web roll. This is a relatively fast packaging process. However, it is enough the width of the packaging web of the second packaging web dispenser not out, then the packaging line of the first packaging web dispenser helical led around the web roll. This takes time a little longer. This can be seen especially in a paper mill because you can keep the same Eject the paper machine either one smaller number of web rolls with a larger one axial length or a larger number of web rolls with a smaller axial length. Because packaging is not just the actual wrapping process counts, but also the insertion of the material web roll into and ejecting the packaged Roll of material from the packaging device readily recognizable that one with web rolls with a greater axial length over certain time reserves features.

The angle can preferably be changed. With that you are et al able to complete the packaging process when screwing Packing at different diameters to adapt to the material web roll.

Above all, however, it is preferred if the output path of the first packaging web dispenser parallel to that of the second packaging web dispenser can be aligned. In In this case, you can get out of the packaging line of the first Packaging web dispenser and the packaging web of the second packaging lane dispenser a combined packaging lane put together with a larger width, so that material web rolls simply in the circumferential direction can be packed, the axial length of which is greater is the width of the packaging web of the second packaging web dispenser. So you take advantage of fast packaging even with these somewhat larger web rolls claim.

The second packaging web dispenser preferably has a greater distance from the web roll than the first packaging web dispenser. This is the second Packaging web dispenser of the movement of the first packaging web dispenser not in the way in the axial direction. The Guiding the packaging lines is simplified.

The second packaging web dispenser preferably has a packaging web that is wider than the packaging web of the first packaging web dispenser. In order to one covers especially when the packaging web of the second packaging web dispenser more than twice as much as wide as the packaging web of the first packaging web dispenser is, a relatively large proportion of that too packaging material web rolls already with the packaging web of the second packaging web dispenser. The Output on packaged web rolls can be significant be increased.

There are preferably two first packaging web dispensers intended. This approach has two advantages. To the then it is possible for the packaging line of the to widen the second packaging web dispenser twice, so that an even larger proportion of the web rolls to be packed be packed in the circumferential direction can. On the other hand, you can buy two first packaging dispensers two edge strips on the two axial Apply ends of the web of material at the same time, which helps to reduce the packaging times for the Use of the helical packaging too shorten.

The task is in the process of the aforementioned Art solved in that one before packing the axial length of the web roll determined and dependent the length of a first packaging line helical or a second packaging line in the circumferential direction around the roll of material web leads.

As stated above in connection with the device, this way you have the opportunity to certain proportion of the web rolls to be packed to pack in a "conventional" manner, i.e. by Wrapping the roll of material web with the packaging web in the circumferential direction. Only when the width of this second packaging line is no longer sufficient, the first packaging line in action. This can be the longer one Pack the web rolls in a helix and accordingly is not limited to certain length dimensions the web roll is limited. The throughput can be compared to the exclusive packaging increase in helical shape.

The second packaging web is preferably introduced Rolls of material with an axial length in one predetermined length range parallel to the first packaging line, with both packaging lanes facing each other overlap. So you create a composite packaging web, the circumferential direction around the roll of material can be led around. The share of web rolls, which can be packed "quickly" increases because now material web rolls are now also packed whose axial length is greater than the width of the second packaging line.

Preferably, two first packaging lines are used at both axial ends of the web roll. The length range of the material web rolls, in which packaging is possible in the circumferential direction is, still expand.

In addition, it is particularly advantageous that one the first two packaging lines for the helical one Packaging used as edge strips. The edge strips can certainly be used with a larger one Number of turns around the axial ends of the web roll are led around as the helical guided packaging in the axial center.

Fig. 1

eine schematische Seitenansicht einer Vorrichtung zum Verpacken einer Materialbahnrolle,

Fig. 2

eine schematische Draufsicht zur Darstellung der Verpackung einer Materialbahnrolle mit einer ersten Breite,

Fig. 3

eine entsprechende Darstellung mit einer Materialbahnrolle einer etwas größeren Breite und

Fig. 4

eine entsprechende Darstellung mit einer Materialbahnrolle mit einer noch größeren Breite.

The invention is described below with reference to a preferred embodiment in connection with the drawing. Show here:

Fig. 1

2 shows a schematic side view of a device for packaging a roll of material web,

Fig. 2

1 shows a schematic top view to show the packaging of a roll of material web with a first width,

Fig. 3

a corresponding representation with a material web roll of a slightly larger width and

Fig. 4

a corresponding representation with a material web roll with an even greater width.

In the case of a roll of material web, the term is used below "Latitude" and "axial length" are used interchangeably the comparability with the "width" of a packaging line to facilitate.

1 shows a device 1 for packaging a roll of material web 2, which rests on two support rollers 3, 4, at least one of which is driven around the roll of material web 2 to rotate.

Two carriages 7 which can be moved on rails 5, 6 (FIG. 1) and 7a, 7b (Fig. 2) each carry a packaging web roll 8, which is pivotable about a pivot point 9 is. In Fig. 1 there is only one roll of packaging web 8 recognizable. There, as explained in more detail below will be a total of two packaging web rolls 8a, 8b are present, they are shown in FIGS "a" and "b" distinguished.

From the packaging web roll 8, the following as first packaging web roll is called, a Deducted packaging web 10, the first in the following Packaging web 10 is called. schematically are shown guide means 11 with which the first Packaging web 10 of the material web roll 2 fed becomes.

A second packaging web roll 12 is in a larger one Distance to web roll 2 or to both Carrying rollers 3, 4 arranged and on a stand 13 stored stationary. The second web roll 12 is neither movable in the axial direction nor can one of their peeled second packaging web 14 their direction change with respect to web roll 2.

The second packaging web 14 is via guide means 17th performed, which are only shown schematically. The second packaging web roll 12 with the stand 13 and the guide means 17 forms a second packaging web dispenser 18, which is stationary overall. The Carriage 7 with the guide means 11 and the packaging web roll 8 forms a first packaging web dispenser 16, which is displaceable in the axial direction.

As can be seen from Fig. 2, the second packaging line 14 of the material web roll 2 are fed so that they are in the circumferential direction on the circumference of the roll of material 2 is wound up when the web of material rolls 2 turns.

The second material web roll 14 has, for example Width of 1,200 mm. You can with the second web roll 14 So all "narrow" material web rolls with a width in the range of about 600 mm to about Pack 1,000 mm so that at the axial ends of the web roll an overhang of the packaging web 14 remains, which later on the end faces of the web roll can be folded, for example, to to hold a front cover (not shown).

With correspondingly narrow web rolls 2 are the first packaging web rolls 8a, 8b not active. she are in the axial direction 15 as far from the web roll 2 drove away that the packaging process do not bother.

As for packaging with the second packaging line 14 only a few revolutions of the material web roll 2 packing times are necessary keep short. A high roll throughput can be achieved.

In Fig. 3, a situation is now shown where the packing material web roll 2 'a larger width has, for example, a width in the range of 1,000 mm to 1,800 mm. In this case the second one is enough Packing web 14 does not run out of the material web roll 2 'to pack over their entire axial length.

In order to achieve a relatively fast packaging anyway, the first two packaging web rolls 8a, 8b or the complete first packaging web dispenser 16a, 16b shifted in the axial direction 15 so that the first Packaging lanes 10a, 10b the second packaging lane 14 overlap somewhat in the axial direction 15. in this connection you can adjust the overlap so that the width of the first packaging webs 10a, 10b and the second packaging web 14 composite packaging web is greater than the width of the roll of material web 2 '. In this case too, you can agree with some a few turns of the web roll 2 'sufficient Number of packaging web layers on the scope of the web roll 2 '. Also in this Case is needed to completely pack the roll of material 2 'only a relatively short time.

It is also possible that you do not have both first packaging lines 10a, 10b needed, but only one. In In this case, one of the first two packaging web donors 16a, 16b not put into operation, but he then remains in one of the resting positions, like her is shown in Fig. 2. You may have to Shift the web roll 2 'somewhat in the axial direction 15.

If 2 "rolls of material are to be packed now, whose width is greater than the width of the composite first and second packaging webs 10a, 10b, 14, then the first packaging web dispenser 16a turns on move the one axial end of the web roll 2 " and in the direction of an angle 19 around the pivot point 9a pivoted. The first packaging line 10a is then with the circumference of the web roll 2 "in connection brought. If the web roll is rotated 2 ", the carriage 7a on the rails 5, 6 becomes parallel move to the web roll 2 "and synchronously with the rotation of the web roll 2 ", so that the first packaging web 10a helically around the Scope of the web roll 2 "is guided around.

When the other end of the web roll reaches 2 " is the first packaging web dispenser 16a again moved back to the original end and the other first packaging web dispenser 16b becomes the other end hazards. Both first packaging web dispensers 16a, 16b are now aligned so that the packaging line 10a, 10b runs parallel to the circumferential direction. It will then some additional layers of the packaging web 10a, 10b wrapped around the material web roll 2 " Formation of an axial protrusion. The first two Packaging webs 10a, 10b then form an edge strip.

By choosing the widths of the first packaging lines 10a, 10b and the second packaging web 14 can be a relatively good adaptation to the spectrum of the packaged Achieve web rolls 2, 2 ', 2 ". Used a second packaging line, for example 14 with a width of 1,200 mm and two first packaging lines 10a, 10b with a width of each 500 mm, then the packaging can be as follows Perform samples:

For web rolls with a width in the range of 600 mm to about 1,000 mm are used exclusively the second packaging web 14. With a width of the material web roll 2 'in the range from 1,000 mm to approximately 1,800 mm, one or both of the first are also used Packaging webs 10a, 10b. Achieved up to approximately 1,800 mm So you have a relatively quick packaging, so that a high throughput can be realized.

Only for material web rolls with a width above The helical packaging becomes 1,800 mm used, in addition edge protection windings can be applied.

Since experience has shown that the proportion of web rolls 2, 2 'with a width of less than 1,800 mm is larger than the proportion of the correspondingly larger web rolls 2 ", can in most cases Realize "fast" packaging in which only is wound in the circumferential direction. Only at the larger web rolls is helical Packaging required.

Claims (11)

1. Apparatus (1) for packaging a roll (2) of web material, comprising a roll drive (3, 4) and a packaging web dispenser arrangement (16, 18), which has at least one first packaging web dispenser (16) which can be moved parallel to the roll of web material and has an output path (11) which forms an acute angle with the circumferential direction of the roll (2) of web material, characterized in that a second packaging web dispenser (18) is arranged in a stationary manner and has an output path (17) which runs parallel to the circumferential direction of the roll (2, 2') of web material.
2. Apparatus according to Claim 1, characterized in that the angle can be varied.
3. Apparatus according to Claim 2, characterized in that the output path (11) of the first packaging web dispenser (16a, 16b) can be aligned parallel to that of the second packaging web dispenser (18).
4. Apparatus according to one of Claims 1 to 3, characterized in that the second packaging web dispenser (18) is at a greater distance from the roll (2, 2', 2") of web material than the first packaging web dispenser (16a, 16b).
5. Apparatus according to one of Claims 1 to 4, characterized in that the second packaging web dispenser (18) has a packaging web (14) which is wider than the packaging web (10a, 10b) of the first packaging web dispenser (16).
6. Apparatus according to Claim 5, characterized in that the packaging web (14) of the second packaging web dispenser (18) is more than twice as wide as the packaging web (10a, 10b) of the first packaging web dispenser (16).
7. Apparatus according to one of Claims 1 to 6, characterized in that two first packaging web dispensers (16a, 16b) are provided.
8. Method for packaging a roll (2) of web material with a packaging web, in which the packaging web is led around the circumference of the roll (2) of web material, characterized in that, before the packaging, the axial length of the roll (2) of web material is determined and, depending on the length, a first packaging web is led helically or a second packaging web is led in the circumferential direction around the roll (2) of web material.
9. Method according to Claim 8, characterized in that, in the case of rolls of web material with an axial length in a predetermined length range, the second packaging web (14) is led parallel to the first packaging web (10), the two packaging webs overlapping each other.
10. Method according to Claim 9, characterized in that two first packaging webs (10a, 10b) are used at the two axial ends of the roll (2) of web material.
11. Method according to Claim 10, characterized in that, in the case of helical packaging, the two first packaging webs (10a, 10b) are used as edge strips.

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